i have 1996 4L everything standard and well maintained.
Getting a lousy 8mpg on highway.

the question is what should be looked at to improve this ????

My 30 year old landcruiser gets 20mpg , starting to think jeeps are not so good.

If your only getting 8mpg on the highway, I don't care how well maintained it is...it ain't the Jeep. Something is wrong and needs to be fixed. It could be anything from tire pressures to tuneup..._________________97 XJ Sport with a bunch of stuff

Quote:

Never argue with idiots, they drag you down to their level and beat you with experience

when i posted a while back, i was getting 11 in town 22 on hwy.
and my wife was driving it all the time,
so i was neglecting a bit,
so even though it wasnt due, gave it a good tune up, and ran some cans of Berrymans through it on a couple of fill ups
and last two times i checked, i'm up to 14 in town,
but haven't gone out of town yet, so i dont know the Hwy MPG

and i also flushed coolant, and put a 160 degree thermostat in to keep it a little cooler,

i did all of these things within the same week, so i dont know if the thermostat helped out or not with the mileage, but it makes me feel better

A 160 degree thermostat will actually hurt gas mileage. If the engine temp is under 180, the computer will stay in open loop...meaning it will run the engine richer in an attempt to get it up to temperature. So all putting a 160 thermostat in does is make the engine take longer to warm up...and you'll burn more gas while it does. _________________97 XJ Sport with a bunch of stuff

Quote:

Never argue with idiots, they drag you down to their level and beat you with experience